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Organic and Genetically Modified Soybean Diets: Consequences in Growth and in Hematological Indicators of Aged Rats

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Abstract

The aim of this study was to evaluate the protein quality of organic and genetically modified soy by feeding specific diets to rats. Three groups of Wistar rats (n = 10) were used, and each group was named according to the food that they ate. There was an organic soy group (OG), a genetically modified soy group (GG), and a control group (CG). All animals received water and diet ad libitum for 455 days. At the end of this period, the weight of the GG group was the same as that of the OG, and both were higher than CG. Protein intake was similar for the OG and GG, which were significantly lower (p < 0.0005) than the CG. The growth rate (GR) of the rats, albumin levels, and total levels of serum protein were comparable for all groups. Hematocrit (p < 0.04) and hemoglobin (p < 0.03) for the OG and GG were less than the CG. Although the OG and GG demonstrated reduced hematocrit and hemoglobin, both types of soy were utilized in a way similar to casein. This result suggests that the protein quality of soy is parallel to the standard protein casein in terms of growth promotion but not hematological indicators.

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Abbreviations

BW:

body weight

CG:

control group

CP4 EPSPS:

5-enolpyruvylshikimate-3-phosphate synthase

EDTA:

ethylenediaminetetraacetate

GG:

genetically modified soy group

GMO:

genetically modified organism

GMS:

genetically modified soy

GR:

growth rate

LabNE:

Laboratory of Experimental Nutrition

OG:

organic soy group

OS:

Organic soy

RR:

RoundUp ready

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Acknowledgments

This study was performed under the auspices of the State of Rio de Janeiro Research Assistance Foundation (FAPERJ) and the National Council for Scientific and Technological Development (CNPq).

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Authors and Affiliations

  1. College of Medicine, Federal Fluminense University, Niterói, Brazil

    Julio Beltrame Daleprane

  2. Departament of Nutrition and Dietetics, Experimental Nutrition Laboratory, College of Nutrition, Federal Fluminense University, Niterói, Brazil

    Julio Beltrame Daleprane, Tatiana Silveira Feijó & Gilson Teles Boaventura

  3. Departamento de Nutrição e Dietética, Faculdade de Nutrição, Universidade Federal Fluminense (UFF), Rua São Paulo, n° 30/4° andar, Niterói, RJ, 24015-110, Brasil

    Julio Beltrame Daleprane

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  1. Julio Beltrame Daleprane
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  2. Tatiana Silveira Feijó
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Correspondence to Julio Beltrame Daleprane.

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Daleprane, J.B., Feijó, T.S. & Boaventura, G.T. Organic and Genetically Modified Soybean Diets: Consequences in Growth and in Hematological Indicators of Aged Rats. Plant Foods Hum Nutr 64, 1–5 (2009). https://doi.org/10.1007/s11130-008-0101-0

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